Sources of Vitamin B17:
....... there are many foods that contain Vitamin B17. These include: Apple seeds, alfalfa sprouts, apricot kernels, bamboo shoots, barley, beet tops, bitter almond, blackberries, boysenberries, brewer’s yeast, brown rice, buckwheat, cashews, cherry kernels, cranberries, currants, fava beans, flax seeds, garbanzo beans, gooseberries, huckleberries, lentils, lima beans, linseed meat, loganberries, macadamia nuts, millet, millet seed, peach kernels, pecans, plum kernels, quince, raspberries, sorghum cane syrup, spinach, sprouts (alfalfa, lentil, mung bean, buckwheat, garbanzo), strawberries, walnuts, watercress, yams.
The above is extracted from:
http://www.cancure.org/laetrile.htm